Comparison of Sigma 120-300mm f/2.8 EX DG OS HSM APO and Sony 70-200mm f/2.8 G SSM II SAL70200G2

Attribute	Sigma 120-300mm f/2.8 EX DG OS HSM APO ×	Sony 70-200mm f/2.8 G SSM II SAL70200G2 ×
Diaphragm Blades Type	rounded	rounded
Notes	Image Stabilized (up to 4 stops). Available AF Mounts: Sigma, Canon, Nikon. Included Accessories: Bayonet type Hood (LH1128-01), Tripod socket (TS-31	Faster AF performance and Nano AR coating compared to original version.
Aperture (f)	2.80 - 22.00	2.80 - 32.00
Magnification Ratio (x)	0.12	0.21
Filter Size (mm)	105	77
Diameter (mm)	114.4	87
Type	Telephoto Zoom	Telephoto Zoom
Diaphragm Blades	9	9
Lens Construction	23 elements in 18 groups, including 1 SLD and 2 FLD elements	19 elements in 16 groups, including 4 ED elements
Focal Length (mm)	120.00 - 300.00	70.00 - 200.00
APS Equivalent	1.5x: 180 - 450mm; 1.6x: 192 - 480mm	105 - 300mm
Image Circle	35mm	35mm (A-mount)
Brand	Sigma	Sony
Name	Sigma 120-300mm f/2.8 EX DG OS HSM APO	Sony 70-200mm f/2.8 G SSM II SAL70200G2
Diagonal Angle of View (degree)	8.20 - 20.40	12.50 - 34.00
Focus Details	Internal; HSM with full-time manual override	Internal; SSM (Super Sonic wave Motor) with 2 Direct Manual Focus modes; Focus Hold; Focus Range Limiter
Zoom System	Rotary; Internal	Rotary
Length (mm)	289.2	196.5
Weight (g)	-	1.34
Closest Focus (m)	1.5	1.2